首页
登录
职称英语
The waters east of Cape Hangklip were once the center of a lucrative wild-ca
The waters east of Cape Hangklip were once the center of a lucrative wild-ca
游客
2025-02-19
28
管理
问题
The waters east of Cape Hangklip were once the center of a lucrative wild-caught abalone fishery, but illegal fishing in the mid-1990s escalated to such levels that the recreational fishery was closed in 2003. When abalones did not rebound, commercial fishing was also banned. Continue declines in abalone were attributed to poaching, but an invasion by rock lobsters during the early 1990s probably intensified the trend. Rock lobsters prey on sea urchins, and increased rock lobster densities coincided with significant decreases in urchins. In that area, urchins feed largely by trapping drift kelp, and in doing so provide juvenile abalone with both protective shelter and nourishment. Without urchins’ presence, juvenile abalones are less likely to survive to adulthood. [br] According to the passage, since the early 1990s, sea urchins in the waters east of Cape Hangklip have
选项
A、significantly changed their feeding habits
B、suffered increased predation from a certain species
C、experienced increased competition for kelp, their main source of nourishment
D、seen a sharp decline in the availability of kelp, due to environmental changes
E、rebounded as commercial fishing in the region has declined
答案
B
解析
原文关于海胆有两个信息,一是被岩龙虾捕食了,二是其觅食行为可以保护小鲍鱼。a certain species对应rock lobster,根据文章第四句,海胆遭受了来自岩龙虾越来越多的捕食。A项文中未提及。C项文中未提及。D项文中未提及。E项文中未提及。
转载请注明原文地址:http://tihaiku.com/zcyy/3964140.html
相关试题推荐
ThewaterseastofCapeHangklipwereoncethecenterofalucrativewild-ca
ThewaterseastofCapeHangklipwereoncethecenterofalucrativewild-ca
SanLorenzo,centeroftheancientMesoamericanOlmecculture,isfamousfor
SanLorenzo,centeroftheancientMesoamericanOlmecculture,isfamousfor
Theaveragetemperatureofthelobster-richwatersoffthecoastofFoerklan
BioluminescenceA.Inthepitch-blackwatersoftheoc
BioluminescenceA.Inthepitch-blackwatersoftheoc
BioluminescenceA.Inthepitch-blackwatersoftheoc
BioluminescenceA.Inthepitch-blackwatersoftheoc
BioluminescenceA.Inthepitch-blackwatersoftheoc
随机试题
Whatarethetwospeakerstalkingabout?[br][originaltext]Woman:Hello?Man:
[originaltext]Insomecountriescertainkindsofinsurancearecompulsory.
[originaltext]W:Ok.Thiswillbemytreat.M:Oh,no,youdon’t.W,Allright,
[originaltext] (3)AbustakingpassengerstoaskiresortincentralJapanhas
预应力混凝土桥梁用锚具、夹具静载锚固性能试验,实测5根钢绞线极限拉力值为1310
经中心静脉导管途径行TPN期间,患者突发寒战、高热.以下诊疗措施不恰当的是(
对医术与医德之间关系的理解有误的是A.临床医学决策同时也是伦理决策 B."医乃
患者,女性,46岁,间歇性上腹痛7年,加重1周,有饥饿性疼痛,进食后可缓解,行P
(2020年真题)为使用企业内部开发的无形资产而发生的员工培训支出,不构成企业无
在工程质量缺陷的成因分析中,下列不属于违反法律法规成因范畴的是()。A.边
最新回复
(
0
)